Twenty-two people have been arrested in a Metropolitan Police crackdown on illegal passport factories and suppliers.
More than 100 officers carried out a series of raids at 13 addresses across London, codenamed Operation Greenhill.
During the raids, a total of £40,000 in cash was seized as well as a variety of false passports, driving licences and foreign identity documents.
Nineteen people were arrested and taken into police custody suspected of a range of crimes including unlawful facilitation, identity card offences and possession and conspiracy to produce and distribute false documents. Three people were dealt with for immigration offences.
Wednesday's raids took place across London in Walthamstow, Rotherhithe, Ilford, Upper Holloway, South Lambeth, Hackney, Brixton, Kilburn, Stoke Newington, Tottenham, Bermondsey and Greenford.
The Met's Operation Maxim team led the investigation with assistance from officers from the UK Immigration Service, the Identity and Passport Service, South Yorkshire Police and the Department of Work and Pensions.
A spokesman for the Met described it as one of its most significant co-ordinated crackdowns on illegal passport factories and suppliers.
Detective Chief Inspector John Kielty from Operation Maxim, said: "The Metropolitan Police take these criminal networks very seriously. The production of false passports enables others to commit a range of serious crime. This operation tackles the criminals who try to hide their true identities from enforcement authorities.
"The operation proves how by working closely with our partners, we are able to disrupt these various networks and make London safer."
Operation Maxim deals with organised crime against UK's immigration system and tackles organised criminal networks such as illegal passport factories and people smuggling.
